PalmOne 3223WW 1 GB Memory Expansion Card 1 GB expansion card for PalmOne handhelds Compatible with all Tungsten, Zire, and Treo handhelds with expansion slots Compatible models: Tungsten E, E2, T, T2, T3, W C, T5, and Zire 31, 71, 72 Store music, video, photos, e-books and more MultiMediaCard format